Reduction rings are rings in which the Gröbner bases approach is possible, i.e., the Gröbner basis of an ideal in a reduction ring can be computed using Buchberger's algorithm. We show that one can also compute Gröbner bases of modules over reduction rings. Our approach is much more general than oth
A Gröbner Basis Method for Modules over Rings of Differential Operators
✍ Scribed by Toshinori Oaku; Takeshi Shimoyama
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 683 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0747-7171
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✦ Synopsis
We study modules over the ring (\mathcal{D}{0}) of differential operators with power series coeffcients. For (\mathcal{D}{0})-modules, we introduce a new notion of (F)-Gröbner basis and present an algorithmic method to compute it. Our method is more algebraic than that of Castro ((1986,1987)) which is based on the Weierstrass-Hironaka division theorem. The essential point of our methad consists in using a filtration of (\mathcal{D}{0}) introduced by Kashiwara (1983). This enables us to extend some of the algorithmic methods for rings of power series to (\mathcal{D}{0})-modules. As applications, we can compute, in some cases, the cliaracteristic variety, and the dimension of the space of solutions, of a system of lincar partial differential equations via (F)-Gröbner bases. The relation to previously known methods is also stated.
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